Manufacturing range Outer diameter - 6mm to 105 mm Wall thickness - up to any subject to OD. Specification BS 2871 Part 2 CZ110 Material Admiralty Brass Nominal Composition(%) CU-70.0 to 73.0 As - 0.02 to 0.06 Sn - 1.0 to 1.5 Zn- Remainder Condition Tensite strength (kg/mm)28.6 Elogation (5.65 SO Min) Hardness HV